I'm trying to figure out why the car seems to have a small miss at idle, and free reving it. Here is the Log_Comm file, the car has a 355, built, with a PTE88 turbo, 84 lb/hr injectors, the program is stock aside from the fact that I adjusted it for the 84 lb/hr injectors, and made it open loop only.

http://fastbluetoys.com/Media/TurboP...7-05v.1Log.txt

Basically I want to know if anyone sees anything out of hand, the only thing that I can find is that on a couple of the revs the Injector pulse widths arent matched.

Thanks to anyone that can help

Patrick

 

A couple of things that stand out to me. First your IAC is maxing out at 160 so the motor is needing more air at idle then the IAC can allow. However at the bottom of the graph it is in the 60's which is alright. The real problem appears to be the injectors. THey are so large that the idle is going to be hard to control. The injector ms should never drop below 1 ms(millisecond) and if you look there are a few times where they are 0.38!

 

I see what you are saying, but I'm jsut trying to get a start on the tuning, the car runs like crap, idling or driving, so i wanted to try and get the idle narrowed down, then work on the driving part, i havent driven it much more then around the block it runs so bad. Maybe i should go drive it and get some logs of that?

P

 

The log you showed.. was that of the car idling on its own? I noticed the RPMs and TPS was moving around presumably by you..was that not the case?